Electric contrabass



FIG. 1 is a front view of an electric contrabass;

FIG. 2 is a left-side view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for an electric contrabass, as shown. 